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Finding the Fourth Proportional to 18,379.07, 25,368.89 and 10,824.87

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Solution

The fourth proportional to 18,379.07, 25,368.89 and 10,824.87 is: 14,941.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.07 : 25,368.89 = 10,824.87 : x
  2. Step 2: Convert to fraction form
    18,379.07/25,368.89 = 10,824.87/x
  3. Step 3: Cross multiply
    18,379.07x = 25,368.89 × 10,824.87
  4. Step 4: Simplify right side
    18,379.07x = 274,614,882.17
  5. Step 5: Solve for x
    x = 274,614,882.17/18,379.07
  6. Step 6: Final answer
    x = 14,941.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.